Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects outbound network traffic to Microsoft Graph API originating from a user-agent string identified as 'python-httpx'. This behavior is characteristic of automated scripts or malicious tools using Python libraries to interact with Microsoft cloud services, potentially for data exfiltration or unauthorized API interaction.
This rule detects potential spear-phishing emails impersonating the Microsoft Account Team. The emails use lures related to one-time password (OTP) security notices and contain malicious ZIP or LNK files. It monitors sender addresses, display names, and subjects typical of this phishing campaign, and flags emails containing specific attachment patterns designed to trick users into executing malicious code.
Detects execution of xcopy with specific flags intended to perform recursive copying of files, including hidden and system files, into a staging directory located within C:\Users\Public\. This behavior matches the known exfiltration collection routine of the NarwhalRAT malware, often invoked by processes such as python.exe or userscreen.exe.
Detects the installation or registration of the legitimate gitlab-runner.exe binary as a persistent Windows service. Adversaries can leverage this technique to establish a command-and-control (C2) channel or persistent backdoor by masquerading as legitimate CI/CD infrastructure.
Detects the BTR.sys driver, a tool identified as being extracted from Microsoft's MpEngine.dll and repurposed for kernel-level file and registry manipulation. The rule matches on specific SHA-256 file hashes or combinations of PE metadata strings, indicating the presence of this driver on the system.
Detects execution of the BTR_CLI.exe utility with specific command-line arguments. The flags monitored include -a, -chain, -item, -trigger, and -cleanup, which suggest administrative, chaining, or automated triggering behaviors of a custom or proprietary command-line interface tool. This rule tracks the command-line usage to identify potential automated task execution or system configuration changes.
Detects the creation of an NTFS Alternate Data Stream named ':changelist' on files with a .sys extension. This activity is indicative of potential malicious configuration staging or persistent storage, as seen in techniques involving BTR.sys or similar driver-based persistence mechanisms.
Detects the execution of BTR_CLI.exe with cleanup parameters that correlate with the deletion of specific registry keys (services) and related file artifacts (e.g., .dat or changelist files) within a short time window. This pattern is indicative of a post-compromise cleanup routine aimed at removing traces of malicious services or payloads.
Detects the execution of BTR_CLI.exe with command line arguments indicative of installing or interacting with the Mimikatz driver (mimidrv.sys). This behavior is associated with loading the malicious driver to facilitate credential dumping from kernel memory.
Detects the execution of BTR_CLI.exe with command line arguments indicative of installing or interacting with the Mimikatz driver (mimidrv.sys). This behavior is associated with loading the malicious driver to facilitate credential dumping from kernel memory.
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